Vocabulary 1
A __________________ is a small piece of something that can be tested.
sample
What layer of soil has the most organisms and plants?
topsoil
How many types of fossils are there?
4
How can an insect get stuck in sap and get preserved?
The insect gets stuck to the sap, the sap hardens, preserving the entire insect over time.
An _______________ forms when a living organism leaves an imprint on a rock after it dies?
impression
What layer of soil is a dark loose layer rich in organic matter. Plant roots, animals, and microorganisms can be found there.
topsoil
What type of fossils are clues that plants or animals leave behind in mud?
Trace Fossils
What can fossils tell us about the past?
They can provide us with information about how life on Earth has changed over time.
______________ means to rot, decompose, or break down.
decay
What layer of soil is a hard, solid layer of rock that supports the layers above. No plants or animals live there?
bedrock
What type of fossil forms when a mold fossil gets filled with sediment?
Cast Fossils
What is the name of a scientist that studies fossils?
paleontologist
What are mineralized remains or evidence of plants and animals that lived long ago?
Fossils
What layer of soil is a tightly packed layer of minerals, fragments of rock, a small amount of organic matter, and long tree roots?
subsoil
What type of fossil includes an entire preserved organism trapped in ice, tree sap, or tar?
True Form Fossils
What are the most commonly found fossils?
teeth
Any living thing is called an _________________.
organism
What layer of soil contains broken pieces of rock? It is also called parent material.
Weathered rock
What type of fossil is a fossilized hollow impression of a living thing in rock?
Mold Fossils
How long has Earth been around?
4.5 billion years